I've Been a Bad, Bad Boy

I just found out that several books I have read are on the Index of Forbidden Books. Such works as those of Hobbes, and Descartes are on the list, as is Concerning Human Understanding by John Locke. On the last count, I see why one would think that was a danger to right thinking, as it proposed ethical hedonism and nominalism. I really do think that Concerning Human Understanding has some spooky parts in it.